Shaun and Lea's long-awaited wedding reception is interrupted by a violent attack at the hospital and the entire team must must mobilize to save the victims. Meanwhile, the trauma of seeing people he cares for in life-threatening situations is affecting Shaun in more ways than one.

On their first day as surgical attendings, Dr. Murphy and Dr. Park meet the residents they will be overseeing; Lim returns to work while facing her new reality and the emotions surrounding the changes.

The team treats a famous marriage counselor after she injures her ankle; Dr. Audrey Lim is determined to get to the bottom of what really happened in the operating room during her surgery and sets off on her own internal investigation.

The team operates on a military reenactor whose attempt at authenticity has created an explosive predicament; Dr. Jordan Allen and Dr. Daniel Perez are in a race against time as they search for a severed foot.

Shaun, Asher and Powell treat a young patient on Halloween who has a rare hereditary disease, sending them down an uncharted path; Glassman and Shaun must overcome their differences to work together to try and find a solution for Lim's paralysis.

In the midst of a heatwave, Dr. Shaun Murphy and Dr. Danica Powell are at odds when it comes to their patient's surgery. Their heated stalemate tests Shaun's patience and his willingness to compromise. Meanwhile, when the hospital loses power, Lea and Dr. Aaron Glassman are forced to come up with a quick solution or risk a total shutdown that could risk patients' lives.

When a woman pregnant with sextuplets arrives at the hospital, Dr. Andrews must split the doctors into teams to ensure their health and safety following their high-risk delivery; Shaun and Lea face their own hurdles as they discuss starting a family.

Drs. Shaun Murphy, Asher Wolke and Aaron Glassman meet a patient with an infected surgical sponge that was left in their abdomen. Meanwhile, Dr. Morgan must face her own past when she treats the victim of a sexual assault.

Dr. Shaun Murphy unknowingly creates a competition between Drs. Danica Powell and Daniel Perez when he introduces a new performance rating system. Meanwhile, Dr. Morgan Reznick may have crossed a line with Dr. Alex Park.

Shaun and Lea soon learn that their surprise pregnancy may also come with additional complications. Meanwhile, Doctors Park, Reznick and Allen treat a teen with Gardner’s syndrome whose past surgical history jeopardizes the outcome of his current one.

On the way to their babymoon, Lea and Shaun get a quick lesson in parenting when they rush to aid an injured dog. Meanwhile, Dr. Danica Powell secretly performs an operation on a friend that could jeopardize her career.

Shaun invites Aaron to stay with him while he has exterminators at his house and Lea realizes both men have a lot more in common than she realized. Meanwhile, Dr. Morgan Reznick wrestles with a big decision about her career and her personal life.

Shaun and Lea clash over their parenting styles and worry about what will happen to their relationship when their child is born. Meanwhile, Dr. Lim must find a way to save the damaged lungs that one of her long-time patients has been waiting for.

When a 3-year-old arrives at the ER, the team immediately recognizes he is having a stroke. However, Dr. Shaun Murphy’s diagnosis of the underlying cause doesn’t solve the problem which has Dr. Park search deeper.

Dr. Jared Kalu makes a surprise return to San Jose's St. Bonaventure Hospital with his billionaire patient; Park must treat the man his wife had an affair with and try to find a way to forgive him.

Dr. Shaun Murphy seeks legal representation to help him win a case and puts his faith in a promising, young lawyer who has obsessive compulsive disorder.

Dr. Shaun Murphy must learn how to work with Dr. Jared Kalu again and remind him that he must start all over at St. Bonaventure. Meanwhile, Dr. Murphy treats a teenager suffering from neurological problems with a very high-risk procedure.

When a patient comes in with persistent and lingering COVID symptoms, the team discovers she may be dealing with something harder to treat. Andrews and Villanueva must contend with their hierarchy at the hospital and its effect on their relationship.

Drs. Andrews and Lim clash over a patient split nearly in half, which also reveals her issues with Dr. Kalu’s return. Meanwhile, Dr. Glassman gives Dr. Murphy some fatherly advice as they await news about Glassman’s recent tests.

Dr. Marcus Andrews introduces some of the team to a patient whose optimism and faith seem to cause Dr. Asher Wolfe to be skeptical, in light of his own relationship with religion.

Dr. Glassman and Dr. Murphy's relationship may be irreparably damaged following a tense moment during surgery. While Dr. Reznick struggles during her parental leave, Dr. Park may just be the one she needs the most.

Shaun and Lea head to the delivery room and everyone from the hospital is there, except for one very important person; a tragic accident involving Drs. Perez and Kalu pulls everyone away, including Dr. Murphy.